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Four point charge of +10^(-7)C, -10^(-7)...

Four point charge of `+10^(-7)C, -10^(-7)C, -2 xx 10^(-7)C and +2 xx 10^(-7)C` are placed respectively at the corners A, B, C, D of a 0.05m square. Find the magnitude of the resultant force on the charge at D.

A

0.2 dyne

B

0.2 newton

C

2 dyne

D

0.02 newton

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B
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